Electric-lighting fixture



March 17, 1925. E 1,529,823

H. c. ADAM I T ELECTRIC LIGHTING FIXTURE 'Origifial Filed March 1922 5 7 I a W a 7 I I i Z 4 4 Z .5 5 D I 2 71 [El 7 J 1 C .BYWM

Patented Mar. 17, 1925.

UNITED STATES PATENT OFFICE.

HARRY C. ADAM, OF ST. LOUIS, MISSOURI.

ELECTBIC-LIGHTING FIXTURE.

Original application filed March 8, 1922. Serial No. 541.989. Divided and this application filed January 5. 1923.

To all w/mm if may concern:

Be it known that I. PIARRY (1. Ana. a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Electric Lighting Fixtures, of which the following is a full. clear, and XtlCt (lSC1iP-ti0i1. such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to electric lighting fixtures. and has for its object to provide a light-weight lighting fixture of simple design and inexpensive constructirm,

that is easy to install, my present application being a division of my pending application for electric lighting fixture. Serial No. 541,989. filed March 8. 1922.

Figure 1 of the drawing is a vent -al sectional view of a lighting fixture constructed in accordance with my present invention; and

Figure 2 is a vertical sectional view, illus-- trating a slight modification of my invention.

Briefly stated, my improved lighting fixture is composed of a sustaining element that is adapted to be directly connected to a ceiling or a ceiling outlet box or suspended in below a ceiling by a chain or other suitable means. a canopy, an electric receptacle arranged inside of the canopy and supported by a means that is connected to said sustaining element, and a retaining means for the canopy projecting downwardly fromthe means that supports the electric receptacle. The sustaining element of the fixture is preferably provided with a positioningpofl tion for the canopy and the retaining means for the canopy is so constructed that it will cause the canopy to be held firmly against said positioning ortion.

Referring to t e drawings which illustrate my invention, A designates the sustaining element of the fixture which preferably consists of a substantially diskshaped sheet metal stamping that is adapted to be connected by screws or other suitable fastening devices 1 to a supporting structure which may consist of a ceiling or a ceiling outlet box. as shown in Figure 1, or suspended from a ceiling by a chain or the like connected to an eye bolt 1 in said member. as shown in Figure 2. B designates the canopy of the fixture which is so pro- Serial No. 610,840.

portioncd and arranged that it will Jsurround the sustaining element A and hide it from view, C designates an electric receptacle. arranged inside of the canopy B, and l) designates a member inside of the canopy which supports the electric receptacle C.

The sustaining element A is provided with a canopy positioning portion ,iormed preferably by an integral. downwardly-projecting flange 2 on its peripheral edge, and the canopy B is provided with an annular ledge or shoulder 3 that is adapted to bear against the lower edge of said flange, thereby maintaining the canopy in parallel relationship with the ceiling on which the fixture is mounted and preventing the upper edge of said canopy from being forced into or imhedded in the ceiling during the operation of'arranging the canopy in operative position. The member D inside of the canopy which carries the electric receptacle 0 preferably consists of a horizontally-disposed bar which is suspended from the sustaining'element A by means of screws 4, rigidly connected at their upper ends to the sustaining element in any suitable manner. the screws 4 shown in Figure 1 being provided with heads that are arranged in depressions or pockets 5 in the top side of the sustaining element A and retained in position in said depressions by nuts 6 on the screws that bear against the underside of the sustaining element. The supporting member D for the electric receptacle of the fixture is mounted in such a way that it can be adjusted vertically so as to raise and lower said receptacle, this being efi'ected by mounting the member D on the screws 4 and retaining it in position by means of nuts 7 on said screws arranged above and below said member.

Various means may be used for clamping the shoulder 3 on the canopy against the portion 2 of the sustaining element 'A. In the fixture shown in Figure l the member D is provided with depending screws 8 that project downwardly through the canopy and exposed nuts 9 are mounted on said screws on the underside of-the canopy and in the fixture shown in Figure 2 the screws 4 that connect the member D to the sustaining element A are used for retaining the canopy in position. said screws 4. projecting downwardly through a flange on the inside of the canopy and having nuts 9? lUO neath said flange.

that the sustaining element consists of a sheet metal stamping and it can be installed easily by first assembling the electric receptacle C with the sustaining element A to form a single unit that can be easily mount ed on the supporting structure, and thereafter arranging the canopy in operative po-- sition over the sustaining element and securing said canopy in position by devices that project downwardly from the member D inside of the canopy which carries the electric receptacle, it being impossible'to arrange the canopy in an angular position with relation to the sustaining element or force the upper edge of the'canopy into the ceiling by unequal or excessive tightening of the devices that retain the canopy in operative position, due to the fact that the depending flange 2 on the sustaining element and ledge vided at its peripheral edge with an in- V tegral, downwardly-projecting flange, a canopy arranged so as to. completely conceal said sustaining member from view and provided with a ledge that is adapted to bear against the bottom edge of said flan e, an electric receptacle arranged inside of t e canopy, a supporting bar for said receptacle, screws fastened at their upper ends-to said sustaining member and projecting downs wardly through said supporting bar, nuts on said screws that are adapted to be adjusted so as to raise or lower said supporting bar, and means for forcing the canopy upwardly against the flange on said sustaining member consisting of devices projecting upwardly through the canopy and screwed into said supporting bar.

HARRY o. ADAM 

